#app {

  .main-container {
    min-height: 100%;
    transition: margin-left .28s;
    margin-left: $sideBarWidth;
    position: relative;
  }

  .sidebar-container {
    transition: width 0.28s;
    width: $sideBarWidth !important;
    background-color: $menuBg;
    height: calc(100% - #{$extraHeaderHeight});
    position: fixed;
    font-size: 0px;
    top: $extraHeaderHeight;
    bottom: 0;
    left: 0;
    z-index: 1001;
    overflow: hidden;

    // reset element-ui css
    .horizontal-collapse-transition {
      transition: 0s width ease-in-out, 0s padding-left ease-in-out, 0s padding-right ease-in-out;
    }

    .scrollbar-wrapper {
      overflow-x: hidden !important;
      background: url('~@/assets/layout_images/extra_header_bg.png') center no-repeat;
      background-size: cover;
      background-color: RGBA(57, 149, 214, 1) !important;
    }

    .scrollbar-wrapper > div > ul > .c-parent > li > ul:before {
      display: block;
      position: absolute;
      z-index: 1;
      left: 18px;
      top: 0;
      bottom: 0;
      border: 1px dotted #333;
      border-width: 0 0 0 1px;
      content: "";
    }

    .scrollbar-wrapper > div > ul > .c-parent > li > ul > div:before {
      display: block;
      width: 10px;
      position: absolute;
      z-index: 1;
      left: 20px;
      top: 27px;
      border: 1px dotted #333;
      border-width: 1px 0 0;
      content: "";
    }

    .scrollbar-wrapper > div > ul > .c-parent > li > ul > div > li > ul > div:before {
      display: block;
      width: 30px;
      position: absolute;
      z-index: 1;
      left: 20px;
      top: 27px;
      border: 1px dotted #333;
      border-width: 1px 0 0;
      content: "";
    }

    .el-scrollbar__bar.is-vertical {
      right: 0px;
    }

    .el-scrollbar {
      height: 100%;
    }

    &.has-logo {
      .el-scrollbar {
        height: calc(100% - 50px);
      }
    }

    .is-horizontal {
      display: none;
    }

    a {
      display: inline-block;
      width: 100%;
      overflow: hidden;
    }

    .svg-icon {
      margin-right: 16px;
    }

    .sub-el-icon {
      margin-right: 12px;
      margin-left: -2px;
    }

    .el-menu {
      border: none;
      height: 100%;
      width: 100% !important;
      background-color: transparent !important;
    }

    // 一级菜单样式
    .submenu-title-noDropdown,
    .el-submenu__title {
      border-bottom: 1px solid RGBA(152, 155, 155, 0.4);
      color: #FFFFFF !important;
      background-color: transparent !important;

      // 选中的样式
      &.is-active {
        color: #56595D !important;
        background-color: #DCEDFF !important;
        border-right: 3px solid rgba(31, 66, 93, .5);
      }

      // hover的样式
      &:hover {
        background-color: RGBA(41, 127, 248, .3) !important;
      }
    }

    // 右侧箭头的样式
    & .el-submenu__icon-arrow {
      font-size: 18px;
      color: #FFFFFF;
    }

    // 右侧箭头hover的样式
    &:hover .el-submenu__icon-arrow {
      color: #FFFFFF;
    }

    // 二级菜单样式
    & .el-submenu .el-menu > .nest-menu {
      position: relative;
      // 普通状态
      & .el-menu-item,
      & .el-submenu .el-submenu__title {
        background-color: #D8EAFE !important;
        color: #56595D !important;

        // 选中的样式
        &.is-active {
          background-color: #99CCFF !important;
          color: #56595D !important;
          border-right: 3px solid rgba(31, 66, 93, .5);
          font-weight: bold;
        }

        // hover的样式
        &:hover {
          color: #56595D !important;
          background-color: #99CCFF !important;
        }
      }

      // 三级菜单样式
      & .el-submenu {
        & .el-submenu__title {
          height: 46px;
          background-color: #99CCFF !important;
          color: #56595D !important;
          font-size: 16px;
          font-weight: normal;
          border-bottom: 0;

          & .el-submenu__icon-arrow {
            font-size: 16px;
            color: #73B0FF;
          }
        }
      }

      & .nest-menu .el-menu-item {
        background-color: #F3F8FF !important;
        color: #56595D !important;
        font-size: 14px;

        // 选中的样式
        &.is-active {
          background-color: #3276C1 !important;
          color: #FFFFFF !important;
        }

        // hover的样式
        &:hover {
          color: #56595D !important;
          background-color: #99CCFF !important;
        }
      }
    }
  }

  .hideSidebar {
    .sidebar-container {
      width: 54px !important;
    }

    .main-container {
      margin-left: 54px;
    }

    .submenu-title-noDropdown {
      padding: 0 !important;
      position: relative;

      .el-tooltip {
        padding: 0 !important;

        .svg-icon {
          margin-left: 20px;
        }

        .sub-el-icon {
          margin-left: 19px;
        }
      }
    }

    .el-submenu {
      overflow: hidden;

      & > .el-submenu__title {
        padding: 0 !important;

        .svg-icon {
          margin-left: 20px;
        }

        .sub-el-icon {
          margin-left: 19px;
        }

        .el-submenu__icon-arrow {
          display: none;
        }
      }
    }

    .el-menu--collapse {
      .el-submenu {
        & > .el-submenu__title {
          & > span {
            height: 0;
            width: 0;
            overflow: hidden;
            visibility: hidden;
            display: inline-block;
          }
        }
      }
    }
  }

  .el-menu--collapse .el-menu .el-submenu {
    min-width: $sideBarWidth !important;
  }

  // mobile responsive
  .mobile {
    .main-container {
      margin-left: 0px;
    }

    .sidebar-container {
      transition: transform .28s;
      width: $sideBarWidth !important;
    }

    &.hideSidebar {
      .sidebar-container {
        pointer-events: none;
        transition-duration: 0.3s;
        transform: translate3d(-$sideBarWidth, 0, 0);
      }
    }
  }

  .withoutAnimation {

    .main-container,
    .sidebar-container {
      transition: none;
    }
  }
}

// when menu collapsed
.el-menu--vertical {
  & > .el-menu {
    .svg-icon {
      margin-right: 16px;
    }

    .sub-el-icon {
      margin-right: 12px;
      margin-left: -2px;
    }
  }

  .nest-menu .el-submenu > .el-submenu__title,
  .el-menu-item {
    &:hover {
      // you can use $subMenuHover
      background-color: $menuHover !important;
    }
  }

  // the scroll bar appears when the subMenu is too long
  > .el-menu--popup {
    max-height: 100vh;
    overflow-y: auto;

    &::-webkit-scrollbar-track-piece {
      background: #d3dce6;
    }

    &::-webkit-scrollbar {
      width: 6px;
    }

    &::-webkit-scrollbar-thumb {
      background: #99a9bf;
      border-radius: 20px;
    }
  }
}
